The media relies first and foremost on advertising revenue, which depends on ratings or viewership metrics, which become the goal. The more viewers you get, the more expensive advertising slots become: the point stops being to report the facts and starts being to engage the audience at an emotional level, so that they come back for more.
the newsroom did used to be slightly more insulated when advertising was limited by technology, but once the doors blew open with Craigslist and other online ads it became a craven race to the bottom for both attention and shrinking the newsroom